For some reason most of the video of the roll-out to the pad (4:45 to 5:45) actually shows the second flight vehicle during a test roll-out to the pad in May 1991 (not the pre-flight roll-out in October 1988). You can see that many of the vehicle's tiles are still missing and the Energia is not a flightworthy model.

Much more unique Buran footage is available on Vadim Lukashevich's website (which seems to be back online). http://www.buran.ru/htm/video.htmMost of the video of preparations for the mission and the actual flight is on pages 7 to 12.